Novel metal catalysts comprising nitrogen-containing aromatic ligands and use thereof
申请人:Universiteit van Amsterdam
公开号:EP1905786A1
公开(公告)日:2008-04-02
The present invention discloses a metal catalyst for living radical polymerization having a structure M2+(Y)4(X)2 wherein M is a transition metal selected from the group of Mn, Fe, Co, Zr, Ru, Rh and Os, each Y independently is a nitrogen-containing aromatic mono-ring ligand, at least one ring being substituted on at least one position with a carbon-containing substituent and, optionally, either two or four ligands Y being covalently bonded to each other in pairs, and X is selected from H2O, CH3CN, (CH3)2SO, NH3, and a mono-, di- or tri (C1-C4)-alkyl amine. A preferred catalysts is [Ru(H2O)2(4,4'-dialkyl-2,2'-dipyridyl)2](NO3)2. The catalyst advantageously enables the synthesis of polymers with high molecular weights and low polydispersities from monomer compounds containing a vinyl group.
本发明公开了一种活自由基聚合金属催化剂,其结构为 M2+(Y)4(X)2,其中 M 是选自 Mn、Fe、Co、Zr、Ru、Rh 和 Os 组的过渡金属,每个 Y 独立地是含氮芳香族单环配体、至少有一个环在至少一个位置上被含碳取代基取代,可选择两个或四个配体 Y 成对共价键合,X 选自 H2O、CH3CN、(CH3)2SO、NH3 和单-、二-或三-(C1-C4)-烷基胺。首选催化剂是[Ru(H2O)2(4,4'-二烷基-2,2'-二吡啶基)2](NO3)2。这种催化剂的优点是可以用含有乙烯基的单体化合物合成分子量高、分散性低的聚合物。